A more thorough explanation:

Definition: The Court of Cassation is the highest court in France. Its name comes from its power to cancel (or "quash") the decisions made by lower courts. It is also known as the Cour de Cassation.

Example: If a person is unhappy with a decision made by a lower court in France, they can appeal to the Court of Cassation. The Court of Cassation will then review the case and decide whether or not the lower court made a mistake. If they find that a mistake was made, they can cancel the decision and send the case back to the lower court for a new decision.

Explanation: The example illustrates how the Court of Cassation works. It is the final court of appeal in France, and its role is to ensure that lower courts are following the law correctly. If a mistake is made, the Court of Cassation can cancel the decision and send the case back for a new decision. This helps to ensure that justice is served and that the law is being applied correctly.